CN206112953U - CO2 recovery system based on waste gasification gas and steam turbine cogeneration - Google Patents

Abstract

The utility model discloses a CO2 recovery system based on waste gasification gas and steam turbine cogeneration, including waste gasification system, boiler system, power generation system, power generation system includes blender, low pressure air compressor, highly -compressed air compressor, synthetic flue gas compressor, synthetic flue gas combustion chamber, turbine a, turbine b, steam turbine, generator a, generator b, exhaust -heat boiler, gas water heat exchanger, air vapour gas heat exchanger, synthetic gas vapour gas heat exchanger, recirculating fan, first separator, second separator and feedwater input system. CO2, N2 are isolated to the second separator, the synthetic flue gas compressor of surplus vapour gas input, and the residual gas input waste gasification system that first separator was isolated is as the gasification agent. It can carry out the continuous gasification treatment of large -scale rubbish, and thermal recovery efficiency is high to the regeneration industrial chemicals can be drawed, pollutant and CO2's near zero emission can be realized effectively.

Description

Based on refuse gasification combustion gas and the CO of steam turbine cogeneration2Recovery system

Technical field

The invention belongs to solid waste incineration Treatment and recovery processing technology field, more particularly to it is a kind of based on rubbish The CO of gasification burning and steam turbine cogeneration₂Recovery system.

Background technology

Existing technology of garbage disposal mainly has burning, sanitary landfills, compost, waste recovery etc..In garbage disposal routine In technology, burning disposal has reduced training substantially, and innoxious thorough, occupation of land amount is little, and waste heat energy is obtained by, and secondary pollution is few The advantages of, meet the strategic requirement of China's sustainable development.But with continuous improvement both at home and abroad to environmental requirement, how to strengthen Control to secondary pollution is particularly important.Therefore, refuse pyrolysis gasification burning technology is gradually shifted onto the road of industrial applications On, all kinds of incineration technologies are primarily now used especially for domestic rubbish, the extensive industrialization of gasification burning technology will The technological innovation of domestic garbage disposal industry is brought to regenerate.

For many years, scientific research of the China to the gasification burning technology such as biomass, rubbish, be in progress a lot of, the base of laboratory Plinth research is a lot, also has applied research, such as：Rotary kiln type, the destructive gasifying of vertical and fluidized bed type or temperature gasification and high melting skill Art etc..But in Technique Popularizing application or there is a definite limitation, raw material type, garbage treatment quantity, secondary pollution control and economy Benefit etc. is principal element.

In existing burning process and equipment, fire grate type incinerator is various informative, and its application accounts for whole world waste incineration More than the 80% of the total market size, wherein having in body of heater using mechanical type backstepping fire grate, forwards fire grate or combined fire grate, also adopts With fire grates such as chain-plate type and drum-types.In boiler plant, boiler recovery heat methods are a lot of, technology maturation；Thermal source kind Class is also more, such as：The thermals source such as solar energy, smelting furnace waste heat, coal furnace, fluid bed, fixed bed, rotary kiln, reclaim heat using boiler Amount, for generating electricity, heat supply, heating etc..

In sum, typical gasification burning and boiler plant technology maturation, respectively have its own advantage, but in China's reality The problem and shortage for solving is needed using in：

1., for characteristics such as China's house refuse water content height, complicated components, the technology of moving hearth is used, to rubbish Conveying capacity needs emphasis to consider.In flue gas after burning simultaneously, fly ash content is higher, and collecting ash is heavier, deashing repair and maintenance Cycle is short.

2. being on the increase with refuse production, sanitary fill such as mountain, garbage treatment quantity must be effectively improved, Could meeting the market requirement.

3. require in the face of strict pollutant emission, secondary pollution control is the key problem for technically needing to solve.

4., in order to effectively increase economic efficiency, in rubbish heat treatment process, the organic efficiency of heat needs to improve.It is existing Rubbish heat treatment technics generally using boiler reclaim waste incineration after high-temperature flue gas heat, produce steam shift onto steam turbine send out Electricity, whole transition heat efficiency losses are larger, process identical quantity of refuse, and relative reduction thermal losses and raising heat exchanger effectiveness can To improve the thermal efficiency.

The for example following patent of existing technology：External combustion wet air gas turbine power generating system (ZL 01120378.1), combustion gas wheel Machine electricity generation system and its progress control method (ZL 200880007113.7), double-fuel combustion-supporting type gas-steam combined cycle system The process of system (ZL 200610062631.1), coal powder gas turbine generation system and generation coal powder two-phase flow fuel (ZL200610062055.0), multiple row sectional drive combined type domestic garbage incinerator (ZL200710092508.9) and two-part The problem all referred in incinerator (ZL201010268376.2)：Rubbish heat treatment mode method is not bound with, and The problems such as secondary pollution control of rubbish heat treatment, complicated smoke components；Conventional garbage heat treatment thermal chemical reaction is anti-to aoxidize Based on answering, reduction reaction auxiliary is also easy to produce secondary pollution, and burned oxygen quotient is big, and First air, secondary wind infeed amount are big, In flue gas, dust content is higher, affects larger to heat reclaiming system and smoke processing system, and easy dust stratification, exhaust gas volumn are larger, Relative reduction thermal conversion efficiency；Refuse gasification synthesizes the deep purifying problem of flue gas after burning, need to synthesize flue gas cleannes Meet gas turbine requirement, and the application of refuse gasification burning-gas and steam turbine combined cycle generation；Rubbish heat treatment The innovation of mode, reduces exhaust gas volumn, changes flue gas composition, and chemical reaction environment becomes reduction reaction, the relative raising of the thermal efficiency.

The content of the invention

It is an object of the invention to overcome the deficiencies in the prior art, there is provided a kind of transition heat efficiency losses are less, heat Organic efficiency is higher, and extractable regeneration industrial chemicals, pollutant and CO₂Discharge nearly zero based on refuse gasification combustion gas and steam The CO of turbine cogeneration₂Recovery system.The object of the present invention is achieved like this：

A kind of refuse gasification burns humid air turbine gas and steam turbine and recycles electricity generation system, including refuse gasification to burn Burning system, steam generator system, electricity generation system, the steam generator system have drum, a superheater, the electricity generation system include blender, Low-pressure air compressor, pressure-air compressor, synthesis flue gas compressor, synthesis smoke combustion room, turbine a, turbine b, Steam turbine, electromotor a, electromotor b, waste heat boiler, air-water heat exchanger, air vapour gas heat exchanger, synthesis gas vapour gas heat exchanger, again Circulating fan, the first separator, the second separator and feedwater input system, the side wall of the blender are provided with first and enter Mouth, second entrance, the bottom of the blender is provided with outlet, venthole, the blender is provided with the top of the blender First entrance connection drum saturated vapor outlet, the second entrance of the blender connects the outlet of pressure-air compressor Mouthful, the air inlet of the pressure-air compressor connects the gas outlet of low-pressure air compressor, the low-pressure air compressor Air inlet and atmosphere, the outlet of the blender connect the water inlet of drum, and the venthole of the blender connected The air intake of hot device, the venthole output high pressure superheated steam of the superheater, the venthole connection turbine a of the superheater Air inlet, the turbine a and electromotor a power connectors, high pressure superheated steam promote turbine a to generate electricity, the boiler system The Waste gas outlet of system connects the air inlet of the second separator, and the second separator isolates CO₂、N₂, remaining vapour gas input synthesis cigarette Air pressure mechanism of qi, the air inlet of the synthesis smoke combustion room connect the gas outlet of synthesis flue gas compressor, superheater respectively and go out Steam ports, by high pressure superheated steam and mixed combustion in high-pressure synthesis flue gas input synthesis smoke combustion room, synthesis smoke combustion room Gas outlet connect the air inlet of turbine b, the turbine b and electromotor b power connectors, high-temperature flue gas promote turbine b Generate electricity, the gas outlet of turbine b connection waste heat boiler, the venthole connection steam turbine of the waste heat boiler, the steam turbine with Electromotor b power connectors, the superheated steam pushing turbine that waste heat boiler is discharged generate electricity, the discharge outlet of the waste heat boiler, vapour The discharge outlet of turbine connects the water inlet of feedwater input system respectively；

The gas outlet of the turbine a connects the heating passage of synthesis gas vapour gas heat exchanger, air vapour gas heat exchanger respectively Heating passage, synthesis gas vapour gas heat exchanger heating passage, air vapour gas heat exchanger heating passage parallel connection after reconnect again The air inlet of circulating fan, the Waste gas outlet ECDC of the waste heat boiler connect into the first heated passage of gas vapour gas heat exchanger The air inlet of recirculation blower, the gas outlet of recirculation blower connect the first separator, and first separator isolates nitrogen Emptying is recycled or is input into refuse gasification system as gasifying agent, and residual gas is input into refuse gasification CIU as gas Agent, connects the heat exchange of synthesis gas vapour gas between the gas outlet of the air inlet and synthesis flue gas compressor of the synthesis smoke combustion room Second heated passage of device, connects air vapour gas between the gas outlet of the second entrance and pressure-air compressor of the blender The heated passage of heat exchanger, connects being heated for air-water heat exchanger logical between the low-pressure air compressor, pressure-air compressor Road, supplies water to steam generator system, waste heat boiler after the heating passage of the feedwater input system outlet connection air-water heat exchanger

In order to recycle to the waste gas that steam generator system is excluded, zero discharge amount of exhaust gas is realized, further, described Two separators include one-level membrane separator and the first secondary membrane separator, the second secondary membrane separator, the one-level membrance separation Device isolates H₂、CO₂The first secondary membrane separator is entered, remaining gas enter the second secondary membrane separator, first secondary membrane Separator isolates CO₂N is isolated in recycling, the second secondary membrane separator₂Recycling, described one or two grade The remaining H of membrane separator₂And second other gases input synthesis flue gas compressor isolated of secondary membrane separator.

Further, the gas outlet connection condensation separator of first separator, by unnecessary gas input condensation point In device, condensation separator reclaims CO₂, remaining O₂Used as oxidant, condensed water enters feedwater to input refuse gasification CIU Input system.

Because just containing a large amount of CO after low-pressure burner burning₂, the CO that condensation separator is isolated₂Rubbish gas is not recirculated back to Change CIU, the unnecessary H that the first separator is discharged₂O,CO₂,O₂Into condensation separator point device, O₂As residual burning oxygen Agent, condensed water return oxygen-eliminating device, CO₂Recycling, as the raw material of industry.

Further, the feedwater input system includes being sequentially connected in series by pipeline condenser, water pump, oxygen-eliminating device, increasing Water pump, the discharge outlet of the waste heat boiler are connected between water pump, oxygen-eliminating device by pipeline, between the water pump, oxygen-eliminating device The water inlet of feedwater input system is set, and the water inlet of the input system that feeds water connects water source, the condenser by moisturizing pipeline Water inlet connect the discharge outlet of steam turbine by pipeline, the outlet of the booster water pump is the water outlet of input system of feeding water Mouthful.

Steam output device can not be all converted to water using complete steam by condenser, and absorb the heat of steam release Amount, the Main Function of oxygen-eliminating device are exactly removing the oxygen in boiler feedwater and other gases with it, it is ensured that the quality of feedwater, are increased Water pump can improve hydraulic pressure, it is ensured that the water supply capacity of feedwater input system, and feedwater input system can be to steam turbine, waste heat pot The water that fire grate goes out carries out further heat recovery, improves heat recovery efficiency.

Further, power connects successively for the low-pressure air compressor, pressure-air compressor, turbine a, electromotor a Connect, and synchronous axial system；It is described to synthesize flue gas compressor, turbine b, steam turbine, electromotor b power connector successively, and synchronously turn It is dynamic.

Further, the steam generator system includes boiler body, and the boiler body has cyclone dust removal room, furnace chamber a, stove Room b, the lower end of the cyclone dust removal room arrange smoke inlet, and smoke inlet and the refuse gasification CIU of cyclone dust removal room connect Connect, cyclone dust removal room upper end is the 3rd exhanst gas outlet, the 3rd exhanst gas outlet of cyclone dust removal room upper end and the upper end company of furnace chamber a It is logical, the furnace chamber a, the lower end connection of furnace chamber b, the upper end of the furnace chamber b arranges waste gas outlet, along week in the cyclone dust removal room To the water-cooling wall being provided with a ring, described superheater is provided with the furnace chamber a, vaporizer, boiler sheet in furnace chamber b, is provided with The top of body arranges described drum, and the cyclone dust removal room, furnace chamber a, furnace chamber b are respectively positioned on below drum, set on the drum There is soda pop import, in drum, be provided with water separator, for separating steam water interface, drum connects water by the first down-comer The water inlet of cold wall, for exporting the water that water separator is isolated, drum connects entering for vaporizer by the second down-comer The mouth of a river, for exporting the water that water separator is isolated, the water-cooling wall, the venthole of vaporizer are connected by steam pipe respectively The air intake of drum, for the high-temperature steam that flows back.

In order to carry out harmless treatment to the flue gas that furnace chamber c is discharged, it is preferable that the boiler body has furnace chamber c, described The upper end of furnace chamber c is connected with the waste gas outlet of furnace chamber b upper ends, and the lower end of furnace chamber c arranges Waste gas outlet, and the furnace chamber c's is useless Connect flue gas purification system between gas floss hole and the second separator, the flue gas purification system includes the thick purification being sequentially connected System, booster fan, fine purifiation cleaner unit, the flue gas after purification feed synthesis flue gas compressor.

Preferably, the thick cleaning system includes aeration tower and cleaner unit, and the fine purifiation cleaner unit adopts Lei Shi venturi Washing system, including Venturi scrubber and cyclone separator, the aeration tower connect the Waste gas outlet of furnace chamber c, aeration tower Outlet connection cleaner unit, then make deep purifying into fine purifiation cleaner unit after being pressurized by booster fan.

Thick cleaning system can remove the impurity of big particle diameter, dust, and fine purifiation cleaner unit can remove steam, micropowder dirt etc., Meet gas turbine to require combustion gas cleannes.

In order to further heat recovery is carried out to the flue gas that furnace chamber b is discharged, heat recovery efficiency is improved, further Ground, is provided with economizer in the furnace chamber c, the water inlet of the economizer is connected with the outlet of feedwater input system, the section The outlet of hot device and the soda pop inlet communication of drum.

Further, the refuse gasification CIU includes incinerator, circulation air feed system, the gasification burning Stove includes grate, and feed hopper, gasification furnace and the incinerator set gradually along feedstock direction on grate, the rear of gasification furnace For the cinder notch that falls of gasification furnace, incinerator falls positioned at gasification furnace the front lower place of cinder notch, the slag notch of the rear of incinerator for incinerator, The grate is provided with garbage pusher device, and the garbage pusher device is located at the lower section of feed hopper, for by the rubbish in feed hopper Push in gasification furnace, the lower section of gasification furnace moving hearth and incinerator moving hearth to be respectively arranged below with least one independent The air compartment for arranging, is provided with windrow seal section, the stove between the gasification furnace and incinerator between the feed hopper, gasification furnace Leave transition to fall slag section on frame part, the transition slag section that falls is provided with residue pusher, for the rubbish that will be fallen in gasification furnace Rubbish residue is pushed in incinerator, and the transition falls isolating door to be opened/closed, and the isolating door is used for will gasification Stove, incinerator cut-off；The gasification furnace, incinerator include furnace shell, moving hearth, forward and backward side's difference of the gasification furnace respectively By windrow seal section, transition fall slag section sealing, the transition fall slag section isolation gasification furnace, incinerator, make gasification furnace, incinerator It is separate；The gasification furnace, incinerator are respectively provided with secondary confession on the face arch of the gasification furnace, rear arch respectively in arching upward shape Air port, the vault of the gasification furnace arrange the first exhanst gas outlet, the smoke inlet and the first exhanst gas outlet of the cyclone dust removal room Connection, the vault of the incinerator arrange the second exhanst gas outlet, and igniting combustion supporting hole is respectively equipped with the gasification furnace, incinerator；

The circulation air feed system includes dust arrester, the first blower fan, the second blower fan, and the inlet end of the dust arrester leads to Piping is connected with the second exhanst gas outlet, and the outlet side of the dust arrester is connected with the inlet end of the first blower fan by pipeline, The outlet side of first blower fan connects the house steward of the first manifold, the arm of first manifold respectively with gasification furnace moving hearth Each air compartment of lower section, each secondary confession air port on gasification furnace and cyclone dust removal room smoke inlet connection, described the The first regulating valve, the air inlet and atmosphere of second blower fan, second wind are respectively provided with each arm of one manifold The gas outlet of machine connects the house steward of the second manifold, the arm of second manifold respectively with incinerator moving hearth below each one The inlet end of secondary air compartment and dust arrester, outlet side connection, are respectively provided with the second regulation on each arm of second manifold Valve, the cyclone dust removal room are provided with some combustion airs and supply air port, some combustion airs for air port be located at smoke inlet, the 3rd Between exhanst gas outlet, also including the 3rd manifold, the house steward of the 3rd manifold is connected with the gas outlet of the second blower fan, and the described 3rd Each arm of manifold is connected for air port with some combustion airs respectively, is respectively provided with the 3rd regulating valve on each arm of the 3rd manifold.

For the waste residue for discharging furnace chamber a, furnace chamber b, flue gas deposition is produced in cyclone dust removal room, and prevent waste residue effusion from producing Pollution, it is preferable that be provided with common slag notch below the furnace chamber a, furnace chamber b, the lower end of the cyclone dust removal room are provided with from upper To the taper slag notch that lower radius diminishes, the common slag notch, taper slag notch are connected with the burner hearth of gasification furnace respectively.

In order to further heat recovery is carried out to the flue gas that furnace chamber b is discharged, heat recovery efficiency is improved, it is preferable that Air preheater is provided with the furnace chamber c, the outlet side of second blower fan connects the air inlet of air preheater, air preheat The gas outlet of device connects the house steward of the second manifold.

As a result of above-mentioned technical proposal, the present invention has the advantages that：

The saturated vapor that present invention employs pressure-air, the drum output that blender exported to air compressor is mixed Close, high pressure superheated steam is exported after hot device, high pressure superheated steam promotes turbine a to generate electricity, and the present invention is using synthesis flue gas The high-pressure synthesis flue gas that compressor output steam generator system has not been utilized, the high pressure superheated steam and high-pressure synthesis cigarette of superheater output Mixed combustion in gas input synthesis smoke combustion room, output high-temperature flue gas promote turbine b to generate electricity, and the gas outlet of turbine b connects Waste heat boiler is connect, the discharge outlet connection feedwater input system of waste heat boiler, the superheated steam that the waste heat boiler is discharged promote vapour Turbine generates electricity, and take full advantage of steam generator system does not carry out combined cycle generation using complete flue gas；The present invention also passes through air Vapour gas heat exchanger, synthesis gas vapour gas heat exchanger reclaim the heat that turbine a has not been utilized, and reclaim feedwater using air-water heat exchanger defeated Enter the amount of residual heat of system, using air-water heat exchanger, air vapour gas heat exchanger pre-add hot-air, using synthesis gas vapour gas heat exchanger Pre-add hot synthesis gas, substantially increase heat recovery efficiency；Waste heat boiler, the discharge outlet connection feedwater input system of steam turbine, institute State feedwater input system to supply water steam generator system, waste heat boiler, take full advantage of the heat not utilized of waste heat boiler, steam turbine Amount carries out combined cycle generation；The present invention reclaims H using the first separator₂O,CO₂,O₂System is burned as refuse gasification Deng gas The gasifying agent of system, the pyrolysis, gasification to rubbish are favourable, without CO₂Discharge, gasifying agent participate in refuse gasification CIU chemical reaction Produce more CO, H₂；The discharge capacity of waste gas is greatly reduced, transition heat efficiency losses are less, and the organic efficiency of heat is higher.

This steam generator system by annular water-cooling wall be arranged on cyclone dust removal room on, synthesis gas in cyclone dust removal Indoor Combustion more For abundant, the temperature for producing of burning is higher, relatively reduces thermal losses and improves heat exchanger effectiveness.What this steam generator system was reclaimed In the high-temperature synthesis gas flue gas of refuse gasification outlet of still, synthesis gas flue gas enters cyclone dust removal room to origin of heat, while to whirlwind Tangential air-supplied combustion-supporting flammable synthesis gas in dirt pocket, flue gas sequentially pass through cyclone dust removal room, furnace chamber a, furnace chamber b, section heat Device and air preheater.Recycle the pre- hot condensed water of economizer, pre- hot condensed water enters boiler part, condensed water in water-cooling wall and Heat in vaporizer, form saturated vapor and enter drum, saturated vapor enters superheater after steam-water separation, is thermally formed again Vapourss are exported, for generating electricity.Present inventive concept is novel, using cyclone-burning method, reduces fly ash content in flue gas；Synthesis Gas ignition temperature is high, and gas residence time is long, and pollutant are effectively decomposed, and reduces pollutant emission, realizes rubbish continuous Synthesis gas burning disposal and heat recovery and utilization after gasification.

The gasification furnace of incinerator, incinerator are provided separately, and the vault of gasification furnace arranges the first exhanst gas outlet, incinerator Vault arrange the second exhanst gas outlet, process flue gas respectively beneficial to according to the difference of flue gas quality, while being conducive to removing flue gas Dirt, can provide the flue gas of higher quality, make the utilization rate of flue gas higher, and the waste residue of discharge is less.

Second blower fan blast air for incinerator provide First air and for cyclone separator, the first blower fan provide homoiothermic confession Wind, by the second regulation valve regulation wind supply quantity on correspondence pipeline, makes incinerator residue fully burn；Then, the first blower fan is taken out The flue gas of incinerator is taken, after homoiothermic and cyclone collection flying dust, the flue gas supply gasification furnace of certain pressure is formed First air and secondary wind, by the first regulation valve regulation wind supply quantity on correspondence pipeline, make rubbish in gasification furnace produce gasification, gas Change the flue gas that stove is contained within a certain amount of synthesis gas, discharge from the first exhanst gas outlet, into cyclone dust removal room processing links, the first wind The unnecessary flue gas that machine is extracted also enters cyclone dust removal room simultaneously, takes full advantage of the high-temperature flue gas of incinerator discharge, improves energy The utilization rate of amount, cyclone dust removal room provide high-temperature flue gas.The stoker fired grate formula refuse gasification incinerator garbage treatment quantity of this structure Greatly, the rubbish bed of material can experience the stage that burns of drying, gasification and residue on stoker fired grate, and adaptation China house refuse is aqueous The characteristics such as amount height, complicated component, improve the energy conversion efficiency in garbage processing procedure and reduce pollutant emission in flue gas Amount, effectively prevents secondary pollution, and can realize large-scale rubbish continuous gasification burning disposal, it is ensured that refuse gasification burns effect Fruit and lime-ash clinker ignition loss, it is relative to reduce thermal losses and improve heat exchanger effectiveness, improve the thermal efficiency.

Description of the drawings

Fig. 1 is the structural representation of the present invention；

Structural representations of the Fig. 2 for electricity generation system；

Structural representations of the Fig. 3 for steam generator system；

Structural representations of the Fig. 4 for flue gas purification system；

Structural representations of the Fig. 5 for cyclone dust removal room；

Schematic top plan views of the Fig. 6 for Fig. 5；

Structural representations of the Fig. 7 for incinerator；

Fig. 8 is the structural representation for circulating air feed system.

Reference

1 is incinerator, and 101 is grate, and 102 is feed hopper, and 103 is gasification furnace, and 104 is incinerator, and 105 is stove Bed, 106 is garbage pusher device, and 107 is an air compartment, and 108 is windrow seal section, and 109 fall slag section for transition, and 110 push away for residue Glassware, 111 is isolating door, and 112 is the first exhanst gas outlet, and 113 is the second exhanst gas outlet, and 114 is igniting combustion supporting hole, and 115 is two Secondary confession air port, 116 is slag notch, and 117 is the cinder notch that falls；

201 is dust arrester, and 202 is the first blower fan, and 203 is the second blower fan, and 204 is the first manifold, and 205 is the second discrimination Pipe, 206 is the 3rd manifold, and 207 is the first regulating valve, and 208 is the second regulating valve, and 209 is the 3rd regulating valve；

3 is cyclone dust removal room, and 301 is dirt pocket igniting combustion supporting hole, and 302 is taper slag notch, and 303 is smoke inlet, 304 For the 3rd exhanst gas outlet, 305 supply air port for combustion air；

4 is boiler body, and 402 is furnace chamber a, and 403 is furnace chamber b, and 404 is furnace chamber c, and 405 is water-cooling wall, and 406 is superheater, 407 is vaporizer, and 408 is drum, and 409 is the first down-comer, and 410 is the second down-comer, and 411 is steam turbine, and 412 is defeated for feedwater Enter system, 413 is condenser, and 414 is water pump, and 415 is oxygen-eliminating device, and 416 is booster water pump, and 417 is moisturizing pipeline, and 418 are section Hot device, 419 is flue gas purification system, and 420 is aeration tower, and 421 is cleaner unit, and 422 is booster fan, and 423 is fine purifiation cleaner unit, 424 is air preheater.

5 is electricity generation system, and 501 is blender, and 502 is electromotor a, and 503 is low-pressure air compressor, and 504 are synthesis cigarette Air pressure mechanism of qi, 505 are synthesis smoke combustion room, and 506 is turbine a, and 507 is waste heat boiler, and 508 is electromotor b, and 509 is whirlpool Turbine b, 510 is air-water heat exchanger, and 511 is the first separator, and 512 is air vapour gas heat exchanger, and 513 exchange heat for synthesis gas vapour gas Device, 514 is pressure-air compressor, and 515 is recirculation blower, and 516 is one-level membrane separator, and 517 separate for the first secondary membrane Device, 518 is the second secondary membrane separator, and 519 is condensation separator.

Specific embodiment

Referring to Fig. 1, it is that refuse gasification burns a kind of preferable of humid air turbine gas and steam turbine recycling electricity generation system Embodiment, including refuse gasification CIU, steam generator system, electricity generation system 5, the steam generator system have drum 408, overheated Device 406.

Referring to Fig. 2, the electricity generation system 5 includes blender 501, low-pressure air compressor 503, pressure-air compressor 514th, flue gas compressor 504, synthesis smoke combustion room 505, turbine a506, turbine b509, steam turbine, electromotor are synthesized A502, electromotor b508, waste heat boiler 507, air-water heat exchanger 510, air vapour gas heat exchanger 512, synthesis gas vapour gas heat exchanger 513rd, recirculation blower 515, the first separator 511, the second separator and feedwater input system, the side of the blender 501 Wall is provided with first entrance, second entrance, and the bottom of the blender 501 is provided with outlet, and the top of the blender 501 sets The saturated vapor for having venthole, the first entrance connection drum of the blender 501 is exported, and the second of the blender 501 enters The gas outlet of mouth connection pressure-air compressor 514, the air inlet connection low-pressure air of the pressure-air compressor 514 are calmed the anger The gas outlet of machine 503, the air inlet and atmosphere of the low-pressure air compressor 503, the outlet of the blender 501 connect The water inlet of drum is connect, the venthole of the blender 501 connects the air intake of superheater, the venthole output of the superheater High pressure superheated steam, the venthole of the superheater connect the air inlet of turbine a506, the turbine a506 and electromotor A502 power connectors, high pressure superheated steam promote turbine a506 to generate electricity, the Waste gas outlet connection second of the steam generator system The air inlet of separator, the second separator isolate CO₂、N₂, remaining vapour gas input synthesis flue gas compressor 504, the present embodiment In, second separator is second-stage separator, including one-level membrane separator 516 and the first secondary membrane separator 517, second Secondary membrane separator 518, the one-level membrane separator 516 isolate H₂、CO₂Enter the first secondary membrane separator 517, its residual air Body enters the second secondary membrane separator 518, and the first secondary membrane separator 517 isolates CO₂Recycling, described second Secondary membrane separator 518 isolates N₂Recycling, the 517 remaining H of the first secondary membrane separator₂And the two or two grade Other gas input synthesis flue gas compressors 504 that membrane separator 518 is isolated.

The air inlet of the synthesis smoke combustion room 505 connects the gas outlet of synthesis flue gas compressor 504, superheater respectively Venthole, by mixed combustion in high pressure superheated steam and high-pressure synthesis flue gas input synthesis smoke combustion room 505, synthesize flue gas The gas outlet of combustor 505 connects the air inlet of turbine b509, the turbine b509 and electromotor b508 power connectors, high Warm flue gas promotes turbine b509 to generate electricity, the gas outlet connection waste heat boiler 507 of turbine b509, the waste heat boiler 507 Venthole connects steam turbine, the steam turbine and electromotor b508 power connectors, and the superheated steam that waste heat boiler 507 is discharged is promoted Steam turbine power generation, the discharge outlet of the waste heat boiler 507, the discharge outlet of steam turbine connect the water inlet of feedwater input system respectively Mouthful；

The gas outlet of the turbine a506 connects the heating passage of synthesis gas vapour gas heat exchanger 513, air vapour gas respectively The heating passage of heat exchanger 512, the heating passage of synthesis gas vapour gas heat exchanger 513, the heating passage of air vapour gas heat exchanger 512 The air inlet of recirculation blower 515 is reconnected after parallel connection, the Waste gas outlet ECDC of the waste heat boiler 507 exchanges heat into gas vapour gas First heated passage of device connects the air inlet of recirculation blower 515, and the gas outlet of recirculation blower 515 connects the first separator 511, first separator 511 be membrane separator, first separator 511 isolate nitrogen recycling, residual gas , used as gasifying agent, the gas outlet connection condensation separator 519 of first separator 511 will for input refuse gasification CIU In unnecessary gas input condensation separator 519, condensation separator 519 reclaims CO₂, remaining O₂Input refuse gasification burns system Used as oxidant, condensed water enters feedwater input system to system.The air inlet of the synthesis smoke combustion room 505 and synthesis flue gas pressure Second heated passage of connection synthesis gas vapour gas heat exchanger 513 between the gas outlet of mechanism of qi 504, the second of the blender 501 Connect the heated passage of air vapour gas heat exchanger 512 between the gas outlet of entrance and pressure-air compressor 514, the low pressure is empty Connect the heated passage of air-water heat exchanger 510, the feedwater input system between air pressure mechanism of qi 503, pressure-air compressor 514 Steam generator system, waste heat boiler 507 are supplied water after the heating passage of outlet connection air-water heat exchanger 510.

Further, the feedwater input system 412 includes being sequentially connected in series by pipeline condenser 413, water pump 414, Oxygen-eliminating device 415, booster water pump 416, the discharge outlet of the waste heat boiler 507 are connected to water pump 414, oxygen-eliminating device 415 by pipeline Between, the water inlet of feedwater input system 412 is set between the water pump 414, oxygen-eliminating device 415, the input system 412 of feeding water enters The mouth of a river connects water source by moisturizing pipeline 417, and the water inlet of the condenser 413 connects the draining of steam turbine 411 by pipeline Mouthful, the outlet of the booster water pump 416 is the outlet of feedwater input system 412.

Referring to Fig. 3, in the present embodiment, steam generator system includes boiler body 4, and the boiler body 4 has cyclone dust removal room 3rd, furnace chamber a402, furnace chamber b403, furnace chamber c404.

Referring to Fig. 5, Fig. 6, the lower end of the cyclone dust removal room 3 arranges smoke inlet 303, the cigarette of the cyclone dust removal room 3 Gas entrance 303 is connected with the first exhanst gas outlet 112 of gasification furnace 103 by pipeline, and 3 upper end of cyclone dust removal room goes out for the 3rd flue gas Mouth 304, the smoke inlet 303, the 3rd exhanst gas outlet 304 are located at the opposition side of 3 circumferential wall of cyclone dust removal room, cyclone dust removal room 3 top arranges dirt pocket igniting combustion supporting hole 301.In order that flue gas, combustion air in cyclone dust removal room 3 are sufficiently mixed, burn Discharge from the 3rd exhanst gas outlet 304 afterwards, the cyclone dust removal room 3 is provided with some combustion airs for air port 305, described some combustion-supporting Wind is located between smoke inlet 303, the 3rd exhanst gas outlet 304 for air port 305.The smoke inlet 303, the 3rd exhanst gas outlet 304th, combustion air is radially or tangentially arranged along 3 circumferential wall of cyclone dust removal room for air port 305.3rd cigarette of 3 upper end of cyclone dust removal room Gas outlet 304 is connected with the upper end of furnace chamber a402, the furnace chamber a402, the lower end connection of furnace chamber b403, the furnace chamber b403's Upper end arranges waste gas outlet, and the lower end of the cyclone dust removal room 3 is provided with the taper slag notch 302 that radius from top to bottom diminishes, should Taper slag notch 302 is connected with the burner hearth of gasification furnace 103.Common slag notch is provided with below the furnace chamber a402, furnace chamber b403, The common slag notch is connected with the burner hearth of gasification furnace 103.In the present embodiment, the common slag notch and taper slag notch 302 are connected with the afterbody changeover portion of 103 burner hearth of gasification furnace.

The 3 interior water-cooling wall 405 being circumferentially with along inwall in a ring of the cyclone dust removal room, is provided with the furnace chamber a402 Superheater 406, is provided with vaporizer 407 in furnace chamber b403, the top of boiler body 4 arranges drum 408, the cyclone dust removal room 3rd, furnace chamber a402, furnace chamber b403 are respectively positioned on below drum 408, and the drum 408 is provided with soda pop import, are mixed for being input into soda pop Compound, is provided with water separator in drum 408, and for separating steam water interface, drum 408 is connected by the first down-comer 409 The water inlet of water receiving cold wall 405, for exporting the water that water separator is isolated, drum 408 is connected by the second down-comer 410 The water inlet of vaporizer 407 is connect, for exporting the water that water separator is isolated, the water-cooling wall 405, vaporizer 407 Venthole connects the air intake of drum 408 respectively by steam pipe, for the high-temperature steam that flows back, the saturated vapor of the drum 408 The air intake for connecting superheater 406 by pipeline is exported, for the high-temperature steam of backflow is input in superheater 406, the mistake The venthole output superheated steam of hot device 406.

The upper end of the furnace chamber c404 is connected with the waste gas outlet of furnace chamber b403 upper ends, and the lower end of furnace chamber c404 arranges waste gas Floss hole, is provided with economizer 418, the water inlet of the economizer 418 and the outlet of booster water pump 416 in the furnace chamber c404 Connection, the outlet of the economizer 418 and the soda pop inlet communication of drum 408.The Waste gas outlet of furnace chamber c404 and second Connect flue gas purification system 419 between separator, referring to Fig. 4, the flue gas purification system 419 includes the thick purification being sequentially connected System, booster fan 422, fine purifiation cleaner unit 423, the flue gas after purification feed synthesis flue gas compressor.The thick cleaning system Including aeration tower 420 and cleaner unit 421, the fine purifiation cleaner unit 423 adopts Lei Shi venturi scrubbing systems, including venturi to wash Device and cyclone separator are washed, the aeration tower 420 connects the Waste gas outlet of furnace chamber c, the outlet connection cleaner unit of aeration tower 420 421, then make deep purifying into fine purifiation cleaner unit 423 after being pressurized by booster fan 422.

Referring to Fig. 7, Fig. 8, it is that refuse gasification CIU includes incinerator and its circulation air feed system, gasification burning Stove includes gasification furnace 103, incinerator 104, can seal or connect between gasification furnace 103 and incinerator 104,103 stove of gasification furnace 104 siege of lower section and incinerator of bed is respectively arranged below with two independent air compartments 107, the gasification furnace 103 Secondary confession air port 115 is respectively provided with face arch, rear arch, the vault of the gasification furnace 103 arranges the first exhanst gas outlet 112, described The vault of incinerator 104 arranges the second exhanst gas outlet 113.

Incinerator includes grate 101, and the feed hopper 102, gas set gradually along feedstock direction on grate 101 Change stove 103 and incinerator 104, the slag notch 116 of the rear of incinerator 104 for incinerator 104, the incinerator 104 are provided with Fall cinder notch 117, and the slag notch 116 of the incinerator 104 falls positioned at incinerator the underface of cinder notch 117, it is described fall cinder notch 117 lead to Piping is connected with the slag notch of dust arrester 201.This sealing structure effect is good, can effectively hold reduction pollutant discharge amount. Gasification furnace 103 mainly gasifies to the carbon-containing part of rubbish, and discharges flammable gasification flue gas and rubbish residue, incinerator 104 burn processing for being substantially carried out carbon residue, and discharge innoxious lime-ash.The siege 105 of gasification furnace 103 and incinerator 104 is equal Using the independent stoker fired grate formula moving hearth 105 for driving of segmentation, the fire grate of stoker fired grate formula moving hearth 105 is by travelling oven Row's plate forward laps with fixed grate plate, it is spaced collect form, adjacent multigroup moving grate plate is adopted by pull bar connection Driven with a set of driving means.Carrier of the stoker fired grate formula moving hearth 105 as conveying garbage, embodiments thereof can be each Type moving hearth 105, such as chain-plate type, drum-type, multisection type fire grate system etc..

The grate 101 is provided with garbage pusher device 106, and the garbage pusher device 106 is located at the lower section of feed hopper 102, For the rubbish in feed hopper 102 is pushed in gasification furnace 103, the lower section of 103 moving hearth 105 of gasification furnace and incinerator 104 moving hearths 105 are respectively arranged below with least one air compartment 107 being independently arranged, in the present embodiment, with gasification furnace The 107 corresponding fire grate of air compartment of 103 first halfs, driving means, as the dryer section of 103 siege 105 of gasification furnace, with gasification The gasification section of the latter half of 107 corresponding fire grate of an air compartment of stove 103, driving means as 103 siege 105 of gasification furnace.Gasification The dryer section of 103 siege 105 of stove, gasification section can be respectively adopted 1-2 independent 107 air feed of air compartment, it is also possible to respectively Using 3-4 independent 107 air feed of air compartment.Certainly, fire grate, driving means and an air compartment 107 can not also be correspondingly arranged, Bed of material movement and air distribution relation on moving hearth 105 is adjusted preferably.Incinerator 104 can adopt 1-4 independent First air 107 air feed of room, burns rear lime-ash and excludes from slag notch, into next step treatment process.

It is provided with windrow seal section 108 between the feed hopper 102, gasification furnace 103,106 work of garbage pusher device is entered and located in place In windrow seal section 108, garbage raw material is put into from feed hopper 102 and falls, and garbage pusher device 106 is retreated, then is advanced, reciprocal many Secondary pusher forms windrow in windrow seal section 108, makes 103 entrance of gasification furnace in windrow sealing state, strengthens gasification furnace 103 close Envelope effect, solves garbage pusher device 106 and 102 easy leakage problem of feed hopper.When needing complete prepurging to dispose all rubbish, The forward impelling half stroke again of garbage pusher device 106, rubbish is pushed completely in gasification furnace 103, loses 103 entrance of gasification furnace Windrow sealing effectiveness.Leave transition to fall slag section 109 on 101 part of grate between the gasification furnace 103 and incinerator 104, institute State the transition slag section 109 that falls and be provided with residue pusher 110, for the rubbish residue fallen in gasification furnace 103 is pushed incinerator In 104, the transition slag section 109 that falls can be at windrow sealing state when rubbish residue is piled up, and strengthen 103 sealing effectiveness of gasification furnace, Solve the problems, such as string wind between gasification furnace 103, incinerator 104.In the present embodiment, falls in the transition, and be provided with slag section 109 can The isolating door 111 of opening and closing, the isolating door 111 is for gasification furnace 103, incinerator 104 are separated.The furnace lifting initial stage or need control When wind is altered between gasification furnace processed 103 and incinerator, close isolating door 111, stack a certain amount of residue when the slag section that falls and form windrow After sealing, isolating door 111 can be kept to open, coordinate to use with the residue pusher 110 that lower section is arranged, to realize that rubbish is continuous Gasification burning process.

, respectively in the shape that arches upward, the face arch of the gasification furnace 103 is for the upper end of the gasification furnace 103, the upper end of incinerator 104 Flat construction, or, the face arch of gasification furnace 103 is inclined upwardly structure for rear end.The vault of the gasification furnace 103 arranges the first cigarette Gas outlet 112, the vault of the incinerator 104 arrange the second exhanst gas outlet 113, and 103 upper end of the gasification furnace is arched upward, burns Igniting combustion supporting hole 114 is respectively equipped with the arching upward of 104 upper end of stove.Gasification flue gas is from the first exhanst gas outlet 112, the second exhanst gas outlet 113 exclude, and 103 furnace cavity of gasification furnace is compared with traditional incinerator, relatively reduced；Forward and backward arch and moving hearth 105 Relative position diminishes, and reduces the space of incinerator occupancy, is also easier to insulation, reduces the amount of leakage of heat, be conducive to rubbish Rubbish fully gasifies.Secondary confession air port 115 is respectively provided with the face arch of the gasification furnace 103, rear arch.

The circulation air feed system includes dust arrester 201, the first blower fan 202, the second blower fan 203, in the present embodiment, institute Dust arrester 201 is stated for cyclone separator or hot precipitator 421, first blower fan 202 is high-temperature blower, described second Blower fan 203 is aerator.The inlet end of the dust arrester 201 is connected with the second exhanst gas outlet 113 by pipeline, the dedusting The outlet side of device 201 is connected with the inlet end of the first blower fan 202 by pipeline, the outlet side connection of first blower fan 202 The house steward of the first manifold 204, the arm of first manifold 204 respectively with the lower section of 103 moving hearth of gasification furnace it is each once The smoke inlet 303 in each secondary confession air port 115 and cyclone dust removal room 3 on air compartment 107, gasification furnace 103 is connected, and described first The first regulating valve 207 is respectively provided with each arm of manifold 204, air inlet and the material pit air of second blower fan 203 connect It is logical, the foul smell distributed in material pit can be absorbed, the gas outlet of second blower fan 203 connects the house steward of the second manifold 205, institute State the arm of the second manifold 205 respectively with 104 moving hearth of incinerator below each air compartment 107 and dust arrester 201 Inlet end, outlet side connection, the second regulating valve 208 is respectively provided with each arm of second manifold 205.Also include the 3rd Manifold 206, the house steward of the 3rd manifold 206 are connected with the gas outlet of the second blower fan 203, each of the 3rd manifold 206 Pipe is connected for air port 305 with some combustion airs respectively, is respectively provided with the 3rd regulating valve 209 on each arm of the 3rd manifold 206.Institute State and in furnace chamber c404, be provided with air preheater 424, in the present embodiment, air preheater 424 is located at the downstream of economizer 418, The outlet side of second blower fan 203 connects the air inlet of air preheater 424, the gas outlet connection of air preheater 424 the The house steward of two manifolds 206, the house steward of the 3rd manifold 206 are connected with the gas outlet of air preheater 424.

103 First air of gasification furnace is that the flue gas generation certain pressure of high-temperature blower extraction incinerator 104 blasts gasification furnace 103 Below stoker fired grate formula moving hearth 105 in a corresponding air compartment 107, then by an air holes spray on moving hearth 105 Rubbish is shot through, is gasified, wind supply quantity is adjusted by the first regulating valve 207 on each arm of correspondence.103 secondary wind of gasification furnace Be high-temperature blower extract incinerator 104 flue gas produce certain pressure blast 103 burner hearth of gasification furnace, its spray-hole is arranged on gasification On 103 face arch of stove and rear arch.Secondary confession air port 115 is provided with forward and backward arch, gasification efficiency is improved, strengthens macromolecule in flue gas Substance decomposition.Igniting combustion supporting hole 114 is provided with rear arch, temperature is used in furnace lifting, baker and stable gasification furnace 103, by correspondence The first regulating valve 207 on each arm adjusts wind supply quantity.The air inlet of second blower fan 203 and material pit atmosphere, the The air that two blower fans 203 are blasted can be cold wind or the hot blast after heating.The gas outlet connection the of second blower fan 203 The house steward of two manifolds 205, the arm of second manifold 205 respectively with 104 moving hearth 105 of incinerator below each First air The inlet end of room 107 and dust arrester 201, outlet side connection, are respectively provided with second on each arm of second manifold 205 Regulating valve 208.104 First air of incinerator is that aerator blasts the air of certain pressure under stoker fired grate formula moving hearth 105 In the corresponding air compartment 107 in side, then by an air holes spray penetration residue on moving hearth 105, residual burning is carried out, Wind supply quantity is adjusted by the first regulating valve 207 on each arm of correspondence.The inlet end of dust arrester 201, the air intake of outlet side are Homoiothermic air feed, homoiothermic air feed are that the air of certain pressure is blasted incinerator 104 and exports (i.e. cyclone inlet) by aerator Homoiothermic is carried out, meanwhile, Cyclone outlet (i.e. high-temperature blower entrance) blasts further homoiothermic, by each arm of correspondence First regulating valve 207 adjusts wind supply quantity.

Circulation air feed system to the waste disposal method after stoker fired grate formula refuse gasification incinerator air feed, the method by with Lower step is carried out：

Step A, the gate for closing stoker fired grate formula refuse gasification incinerator 1 and atmospheric vent, start mechanical grate-type rubbish Garbage raw material is put into feed hopper 102 by rubbish incinerator 1, and the pusher back and forth of garbage pusher device 106 will be from feed hopper 102 The garbage raw material for falling pushes the windrow seal section 108 between feed hopper 102, gasification furnace 103, is formed windrow seal section 108 Windrow sealing state, unnecessary rubbish fall into the moving hearth 105 of gasification furnace 103, and the moving hearth 105 of gasification furnace 103 works, Rubbish is conveyed into transition to fall slag section 109, the pusher back and forth of residue pusher 110, the transition rubbish in slag section 109 that falls is pushed away Enter in incinerator 104, the work conveying garbage of moving hearth 105 of incinerator 104, until rubbish is in gasification furnace 103, incinerator 104 moving hearth 105 is accumulated to required thickness：0.6-0.8m, during baker, the rubbish piled up can protect mobile stove Bed 105, prevents scaling loss siege 105.Stop to feed hopper 102 feeding intake, the moving hearth 105 of gasification furnace 103 and incinerator 104 stops Only work, then, with start-up burner pass through the igniting combustion supporting hole 114 of gasification furnace 103 and incinerator 104 respectively with gasification furnace 103 and the burner hearth of incinerator 104 communicate, in the presence of start-up burner, gasification furnace 103 and incinerator 104 are carried out furnace lifting, Baker, treats that this process stabilization is completed, and makes gasification furnace 103 and 104 burner hearth of incinerator reach 600-700 DEG C of predetermined temperature；Baker Purpose be in order to remove the Natural Water in lining and water of crystallization, in order to avoid when going into operation as furnace temperature rises too fast, moisture content is a large amount of Expansion causes body of heater spalling, bubbling or deformation even furnace wall to collapse, and affects the intensity and service life of heating furnace furnace wall.

Step B, startup adjust circulation air feed system 2, adjust gasification furnace 103, incinerator 104 and circulation air feed system 2 Technological parameter (pusher speed, fire grate speed, pathogenic wind-warm, blast and an air quantity, secondary air temperature, blast and air quantity, furnace temperature, Negative pressure, thickness of feed layer etc. in stove), feed intake to feed hopper 102, the work conveying garbage of moving hearth 105 of gasification furnace 103, rubbish Burning is proceeded by the burner hearth of gasification furnace 103, rubbish residue is piled up to form windrow sealing at transition falls slag section 109, made The stove chamber inner combustion state temperature of gasification furnace 103 is stabilized to more than 850 DEG C, the work output combustion of moving hearth 105 of incinerator 104 Rubbish residue after cinder.

Step C, each technological parameter (the pusher speed for adjusting gasification furnace 103, incinerator 104 and circulation air feed system 2 Negative pressure, thickness of feed layer in degree, fire grate speed, pathogenic wind-warm, blast and an air quantity, secondary air temperature, blast and air quantity, furnace temperature, stove Deng), gasification furnace 103 gradually gasifies to rubbish, and gasification temperature is stable between 700-800 DEG C, makes 103 stable product of gasification furnace The raw high-temperature flue gas containing 10%-20% synthesis gas, it is equal that 103 vaporized state of gasification furnace stably carries out low temperature, middle temperature or high-temperature gasification Can.Make 104 fired state temperature stabilization of incinerator to more than 850 DEG C, realize rubbish continuous gasification burning disposal；Need to adjust simultaneously Each technological parameter of cyclone dust removal room 3, makes 304 temperature stabilization of the 3rd exhanst gas outlet of cyclone dust removal room 3 to more than 850 DEG C.

Step D, need to overhaul or during blowing out, stop feeding intake, adjust gasification furnace 103, incinerator 104 and circulation air feed system 2 technological parameter, makes gasification furnace 103 be gradually restored to fired state, after rubbish and rubbish residue burn, closes stoker fired grate Formula refuse gasification incinerator 1 and circulation air feed system 2.Each technological parameter of cyclone dust removal room 3 need to be adjusted simultaneously, make gasification furnace 103 are gradually restored to fired state.

Finally illustrate, preferred embodiment above is only unrestricted to illustrate technical scheme, although logical Cross above preferred embodiment to be described in detail the present invention, it is to be understood by those skilled in the art that can be Various changes are made to which in form and in details, without departing from claims of the present invention limited range.

Claims (10)

1. a kind of based on refuse gasification combustion gas and the CO of steam turbine cogeneration₂Recovery system, including refuse gasification burning system System, steam generator system, electricity generation system, the steam generator system have drum, superheater, it is characterised in that：The electricity generation system includes Blender, low-pressure air compressor, pressure-air compressor, synthesis flue gas compressor, synthesis smoke combustion room, turbine a, whirlpool Turbine b, steam turbine, electromotor a, electromotor b, waste heat boiler, air-water heat exchanger, air vapour gas heat exchanger, synthesis gas vapour gas are changed Hot device, recirculation blower, the first separator, the second separator and feedwater input system, the side wall of the blender are provided with First entrance, second entrance, the bottom of the blender are provided with outlet, and venthole is provided with the top of the blender, described The saturated vapor outlet of the first entrance connection drum of blender, the second entrance connection pressure-air compressor of the blender Gas outlet, the air inlet of the pressure-air compressor connects the gas outlet of low-pressure air compressor, the low-pressure air pressure The air inlet and atmosphere of mechanism of qi, the outlet of the blender connect the water inlet of drum, the venthole of the blender The air intake of connection superheater, the venthole output high pressure superheated steam of the superheater, the venthole connection of the superheater The air inlet of turbine a, the turbine a and electromotor a power connectors, high pressure superheated steam promote turbine a to generate electricity, described The Waste gas outlet of steam generator system connects the air inlet of the second separator, isolates CO₂、N₂, remaining vapour gas input synthesis flue gas pressure Mechanism of qi, the air inlet of the synthesis smoke combustion room connect the gas outlet of synthesis flue gas compressor, the venthole of superheater respectively, By high pressure superheated steam and mixed combustion in high-pressure synthesis flue gas input synthesis smoke combustion room, synthesize the outlet of smoke combustion room The air inlet of mouth connection turbine b, the turbine b and electromotor b power connectors, high-temperature flue gas promote turbine b to generate electricity, whirlpool The gas outlet connection waste heat boiler of turbine b, the venthole connection steam turbine of the waste heat boiler, the steam turbine and electromotor b Power connector, the superheated steam pushing turbine that waste heat boiler is discharged generate electricity, the discharge outlet of the waste heat boiler, the row of steam turbine The mouth of a river connects the water inlet of feedwater input system respectively；

The gas outlet of the turbine a connect respectively synthesis gas vapour gas heat exchanger heating passage, air vapour gas heat exchanger plus The passage of heat, reconnects recirculation after the heating passage of synthesis gas vapour gas heat exchanger, the heating passage parallel connection of air vapour gas heat exchanger The air inlet of blower fan, the Waste gas outlet ECDC of the waste heat boiler are followed again into the first heated passage connection of gas vapour gas heat exchanger The air inlet of ring blower fan, the gas outlet of recirculation blower connect the first separator, and first separator isolates nitrogen purge Or recycle or be input into refuse gasification system as gasifying agent, residual gas is input into refuse gasification CIU as gasification Agent, connects synthesis gas vapour gas heat exchanger between the gas outlet of the air inlet and synthesis flue gas compressor of the synthesis smoke combustion room The second heated passage, between the gas outlet of the second entrance and pressure-air compressor of the blender connect air vapour gas change The heated passage of hot device, connects the heated passage of air-water heat exchanger between the low-pressure air compressor, pressure-air compressor, Steam generator system, waste heat boiler are supplied water after the heating passage of the feedwater input system outlet connection air-water heat exchanger.

2. according to claim 1 based on refuse gasification combustion gas and the CO of steam turbine cogeneration₂Recovery system, which is special Levy and be：Condenser that the feedwater input system includes being sequentially connected in series by pipeline, water pump, oxygen-eliminating device, booster water pump, it is described The discharge outlet of waste heat boiler is connected between water pump, oxygen-eliminating device by pipeline, and feedwater input is arranged between the water pump, oxygen-eliminating device The water inlet of system, the water inlet of the input system that feeds water connect water source by moisturizing pipeline, and the water inlet of the condenser passes through Pipeline connects the discharge outlet of steam turbine, and the outlet of the booster water pump is the outlet of feedwater input system.

3. according to claim 1 based on refuse gasification combustion gas and the CO of steam turbine cogeneration₂Recovery system, which is special Levy and be：The low-pressure air compressor, pressure-air compressor, turbine a, electromotor a power connector successively, and synchronously turn It is dynamic；It is described to synthesize flue gas compressor, turbine b, steam turbine, electromotor b power connector successively, and synchronous axial system.

4. according to claim 1 based on refuse gasification combustion gas and the CO of steam turbine cogeneration₂Recovery system, which is special Levy and be：The steam generator system includes boiler body, and the boiler body has cyclone dust removal room, furnace chamber a, furnace chamber b, the rotation The lower end of wind dirt pocket arranges smoke inlet, and the smoke inlet of cyclone dust removal room is connected with refuse gasification CIU, and whirlwind is removed Dirt room upper end is the 3rd exhanst gas outlet, and the 3rd exhanst gas outlet of cyclone dust removal room upper end connected with the upper end of furnace chamber a, the furnace chamber The lower end connection of a, furnace chamber b, the upper end of the furnace chamber b arranges waste gas outlet, circumferentially arranged with ring in the cyclone dust removal room The water-cooling wall of shape, is provided with described superheater, vaporizer is provided with furnace chamber b in the furnace chamber a, the top of boiler body sets Described drum is put, the cyclone dust removal room, furnace chamber a, furnace chamber b are respectively positioned on below drum, and the drum is provided with soda pop import, Water separator is provided with drum, for separating steam water interface, drum connects the water inlet of water-cooling wall by the first down-comer Mouthful, for exporting the water that water separator is isolated, drum connects the water inlet of vaporizer by the second down-comer, for defeated Go out the water that water separator is isolated, the water-cooling wall, the venthole of vaporizer enter vapour by what steam pipe connected drum respectively Mouthful, for the high-temperature steam that flows back.

5. according to claim 4 based on refuse gasification combustion gas and the CO of steam turbine cogeneration₂Recovery system, which is special Levy and be：The upper end that the boiler body has furnace chamber c, the furnace chamber c is connected with the waste gas outlet of furnace chamber b upper ends, furnace chamber c's Lower end arranges Waste gas outlet, connects flue gas purification system between the Waste gas outlet and the second separator of the furnace chamber c, described Thick cleaning system that flue gas purification system includes being sequentially connected, booster fan, fine purifiation cleaner unit, the flue gas after purification feed synthesis Flue gas compressor, the thick cleaning system include aeration tower and cleaner unit, and the fine purifiation cleaner unit adopts Lei Shi Venturi scrubbings System, including Venturi scrubber and cyclone separator, the aeration tower connect the Waste gas outlet of furnace chamber c, aeration tower outlet Connection cleaner unit, then make deep purifying into fine purifiation cleaner unit after being pressurized by booster fan.

6. according to claim 1 based on refuse gasification combustion gas and the CO of steam turbine cogeneration₂Recovery system, which is special Levy and be：Second separator includes one-level membrane separator and the first secondary membrane separator, the second secondary membrane separator, institute State one-level membrane separator and isolate H₂、CO₂The first secondary membrane separator is entered, remaining gas enter the second secondary membrane separator, institute State the first secondary membrane separator and isolate CO₂N is isolated in recycling, the second secondary membrane separator₂Recycling, The remaining H of the first secondary membrane separator₂And second other gases input synthesis flue gas isolated of secondary membrane separator Compressor.

7. according to claim 1 based on refuse gasification combustion gas and the CO of steam turbine cogeneration₂Recovery system, which is special Levy and be：The gas outlet connection condensation separator of first separator, by unnecessary gas input condensation separator, condenses Separator reclaims CO₂, remaining O₂Used as oxidant, condensed water enters feedwater input system to input refuse gasification CIU.

8. according to claim 5 based on refuse gasification combustion gas and the CO of steam turbine cogeneration₂Recovery system, which is special Levy and be：The refuse gasification CIU includes incinerator, circulation air feed system, and the incinerator includes stove Frame, and feed hopper, gasification furnace and the incinerator set gradually along feedstock direction on grate, the rear of gasification furnace is gasification furnace The cinder notch that falls, incinerator falls positioned at gasification furnace the front lower place of cinder notch, the slag notch of the rear of incinerator for incinerator, the grate Garbage pusher device is provided with, the garbage pusher device is located at the lower section of feed hopper, for the rubbish in feed hopper is pushed gasification In stove, the lower section of gasification furnace moving hearth and incinerator moving hearth be respectively arranged below with least one be independently arranged one Secondary air compartment, is provided with windrow seal section between the feed hopper, gasification furnace, on the grate part between the gasification furnace and incinerator Leave transition to fall slag section, the transition slag section that falls is provided with residue pusher, for the rubbish fallen in gasification furnace residue is pushed away Enter in incinerator, the transition falls isolating door to be opened/closed, the isolating door is for by gasification furnace, incinerator Cut-off；The gasification furnace, incinerator include furnace shell, moving hearth respectively, and the forward and backward side of the gasification furnace is close by windrow respectively Envelope section, transition fall the sealing of slag section, and the transition falls slag section isolation gasification furnace, incinerator, makes gasification furnace, incinerator separate； The gasification furnace, incinerator are respectively provided with secondary confession air port on the face arch of the gasification furnace, rear arch respectively in arching upward shape, described The vault of gasification furnace arranges the first exhanst gas outlet, and the smoke inlet of the cyclone dust removal room is connected with the first exhanst gas outlet, described The vault of incinerator arranges the second exhanst gas outlet, and igniting combustion supporting hole is respectively equipped with the gasification furnace, incinerator；

The circulation air feed system includes dust arrester, the first blower fan, the second blower fan, and the inlet end of the dust arrester is by pipe Road is connected with the second exhanst gas outlet, and the outlet side of the dust arrester is connected with the inlet end of the first blower fan by pipeline, described The outlet side of the first blower fan connects the house steward of the first manifold, the arm of first manifold respectively with gasification furnace moving hearth under The smoke inlet connection of each air compartment of side, each secondary confession air port on gasification furnace and cyclone dust removal room, first discrimination It is respectively provided with the first regulating valve on each arm of pipe, the air inlet and atmosphere of second blower fan, second blower fan Gas outlet connects the house steward of the second manifold, the arm of second manifold respectively with incinerator moving hearth below each First air The inlet end of room and dust arrester, outlet side connection, are respectively provided with the second regulating valve, institute on each arm of second manifold State cyclone dust removal room and be provided with some combustion airs and supply air port, some combustion airs are located at smoke inlet, the 3rd flue gas for air port Between outlet, also including the 3rd manifold, the house steward of the 3rd manifold is connected with the gas outlet of the second blower fan, the 3rd manifold Each arm connect for air port with some combustion airs respectively, be respectively provided with the 3rd regulating valve on each arm of the 3rd manifold.

9. according to claim 8 based on refuse gasification combustion gas and the CO of steam turbine cogeneration₂Recovery system, which is special Levy and be：Common slag notch is provided with below the furnace chamber a, furnace chamber b, the lower end of the cyclone dust removal room is provided with from top to bottom partly The taper slag notch that footpath diminishes, the common slag notch, taper slag notch are connected with the burner hearth of gasification furnace respectively.

10. according to claim 8 based on refuse gasification combustion gas and the CO of steam turbine cogeneration₂Recovery system, which is special Levy and be：Economizer, air preheater are provided with the furnace chamber c, the outlet side connection air preheater of second blower fan Air inlet, the gas outlet of air preheater connect the house steward of the second manifold, water inlet and the feedwater input system of the economizer Outlet connection, the outlet of the economizer and the soda pop inlet communication of drum.